Seismic Testing to Determine Quality of Hot-Mix Asphalt

2006 ◽  
Vol 1946 (1) ◽  
pp. 113-122 ◽  
Author(s):  
Manuel Celaya ◽  
Soheil Nazarian
Keyword(s):  
Hot Mix Asphalt ◽  
Seismic Testing

Boat transport and quality of hot mix asphalt

2016 ◽  
Author(s):  
Brynhild Snilsberg ◽  
Bjorn Hoven ◽  
Roar Telle
Keyword(s):  
Hot Mix Asphalt

scholarly journals KARAKTERISTIK MARSHALL QUOTIENT PADA HOT MIX ASPHALT MENGGUNAKAN AGREGAT ALAM SUNGAI OPAK

2019 ◽  
Vol 15 (2) ◽  
pp. 84-91
Author(s):  
Maris Setyo Nugroho
Keyword(s):  
Hot Mix Asphalt ◽  
Road Construction ◽  
National Standard ◽  
Test Results ◽  
Quality Testing ◽  
Asphalt Content ◽  
Natural Aggregates ◽  
The Stability ◽  
Asphalt Quality

 ABSTRACTThe purpose of this study is to determine the Marshall Quotient (MQ) value of hot mix asphalt (HMA), which uses natural aggregates from the Opak river. In addition to the MQ value in this study also examines the value of stability and flow in concrete asphalt mixtures with asphalt content of 6.5%. The research method used was an experimental method in the JPTSP FT UNY road construction laboratory. The testing standard used refers to the Indonesian National Standard (SNI). In addition to testing Marshall values, preliminary testing is also carried out to determine the quality of the material used. Material testing includes aggregate quality testing and asphalt quality testing. Based on the test results, the stability, flow and MQ values were 1177.01 kg, 3.20 mm and 384.05 kg/mm respectively. When compared with the requirements in the RSNI 03-1737-1989, only the flow values do not meet the requirements.Keywords: hot mix asphalt (HMA), stability, flow, marshall quotient ABSTRAK Penelitian ini bertujuan untuk mengetahui nilai Marshall/Marshall Quotient (MQ)dari campuran aspal panas/hot mix asphalt (HMA), yang menggunakan agregat alami dari kali Opak. Selain nilai MQ pada penelitian ini juga mengkaji nilai stabilitas dan kelelehan (flow) pada campuran aspal beton dengan kadar aspal 6,5%. Metode penelitian yang digunakan yaitu metode eksperimental di laboratorium konstruksi jalan JPTSP FT UNY. Standar pengujian yang digunakan mengacu Standar Nasional Indonesia (SNI). Selain pengujian nilai Marshall juga dilakukan pengujian pendahuluan untuk mengetahui mutu material yang digunakan. Pengujian material yang dilakukan meliputi pengujian mutu agregat dan pengujian mutu aspal yang digunakan untuk campuran aspal beton. Bersarkan hasil pengujian diperoleh nilai stabilitas, kelelehan, dan nilai Marshall berturut-turut sebesar 1171,01 kg, 3,20 mm, dan 384,05 kg/mm. Jika dibandingkan dengan persyaratan nilai stabilitas, kelelehan, dan nilai marshal yang tercantum pada RSNI 03-1737-1989, hanya nilai kelehan saja yang tidak memenuhi persyaratan. Kata kunci: hot mix asphalt (HMA), stabilitas, kelelehan, nilai marshall

The Summery of Warm Mix Agent

2014 ◽  
Vol 1065-1069 ◽  
pp. 826-829
Author(s):  
Shu Guang Yao
Keyword(s):  
Sustainable Development ◽  
Energy Consumption ◽  
Energy Saving ◽  
Hot Mix Asphalt ◽  
Warm Mix Asphalt ◽  
Environment Friendly ◽  
The Sustainable Development ◽  
New Energy

Compared with hot mix asphalt (HMA), warm mix asphalt (WMA), which reduces the mixing and compaction temperatures and energy consumption and emissions, while maintaining the quality of HMA , is a new energy-saving and environment-friendly paving material, with a broad prospect.In order to develop the warm mix asphalt and prompt the sustainable development of pavement, some kinds of warm mix agent are summarized as follows.

Research on Application of Warm Mix Asphalt Technology in Central Plant Hot Recycled Engineering

2013 ◽  
Vol 361-363 ◽  
pp. 1635-1639
Author(s):  
Qing Zhou Wang ◽  
Shu Yan Liu ◽  
Xiao Li Li
Keyword(s):  
Hot Mix Asphalt ◽  
Asphalt Mixture ◽  
Warm Mix Asphalt ◽  
Reclaimed Asphalt Pavement ◽  
Performance Tests ◽  
Recycled Asphalt ◽  
Reclaimed Asphalt ◽  
Central Plant ◽  
Research On Application

The warm mix asphalt technology was introduced to breaks through the low reclaimed asphalt pavement (RAP) ratio in central plant hot recycled engineering. Firstly, performance tests for traditional hot mix asphalt and central plant warm recycled asphalt mixture with different RAP ratios (0%,40%,50%,70%,100%) were conducted. It was concluded that the performance of warm mix asphalt was as good as hot mix asphalt, and the RAP ratio could increase to 60% by central plant warm recycling technology. Then a practical central plant warm recycled engineering with RAP ratio 50% was analyzed. It was concluded that not only the performance of the recycled asphalt mixture met the standard requirements absolutely, but also the compaction quality of the recycled pavement was improved.

Summary of Current Quality Control/ Quality Assurance Practices for Hot-Mix Asphalt Construction

1998 ◽  
Vol 1632 (1) ◽  
pp. 22-31 ◽  
Author(s):  
Robert L. Schmitt ◽  
Jeffrey S. Russell ◽  
Awad S. Hanna ◽  
Hussain U. Bahia ◽  
Galadriel A. Jung
Keyword(s):  
Quality Control ◽  
Quality Assurance ◽  
Hot Mix Asphalt ◽  
Quality Level ◽  
Essential Information ◽  
Control Quality ◽  
State Highway ◽  
Testing Frequency ◽  
State Highway Agencies

State highway agencies and contractors have been implementing quality control/quality assurance (QC/QA) specifications in recent years to advance the quality of hot-mix asphalt (HMA) construction. During their continued development, attributes of these QC/QA specifications have varied among states. The objective of this paper is to provide a compilation of state-of-the-practice in QC/QA for HMA construction and provide recommendations for state highway agencies and contractors when modifying or developing a QC/QA specification. Survey data from 42 state highway agencies and 61 contractors working within 14 states found that a majority of states are using contractor data for acceptance. A review of QC/QA specifications from 40 states found that most states are using plant-produced mix properties, density, and smoothness tests to determine overall quality and acceptance of HMA construction work. A larger number of states are using quality level analysis for specification compliance by estimating percent within limits or percent defective for mix properties and density. Consideration is given to key attributes of a QC/QA specification, including ( a) whether to use contractor or agency data for acceptance, ( b) use of quantity or time for lots, and ( c) testing frequency. State highway agencies and contractors may find this report useful for understanding the components of different QC/QA specifications and furnishing essential information as both parties collaborate during specification development.

Performance Analysis of Ultrathin Whitetopping Intersections on US-169: Elk River, Minnesota

2003 ◽  
Vol 1823 (1) ◽  
pp. 18-27 ◽  
Author(s):  
Julie M. Vandenbossche
Keyword(s):  
Test Section ◽  
Hot Mix Asphalt ◽  
Asphalt Pavements ◽  
Department Of Transportation ◽  
Uniform Thickness ◽  
Research Facility ◽  
Transverse Cracks ◽  
Elk River ◽  
Joint Pattern

The Minnesota Department of Transportation constructed an ultrathin whitetopping (UTW) project at three consecutive intersections on US-169 at Elk River, Minnesota, to gain more experience with both the design and the performance of UTW. Distinct cracking patterns developed within each test section. The UTW test sections with a 1.2- ×1.2-m (4- ×4-ft) joint pattern included corner breaks and transverse cracks. Corner breaks were the primary distress in the test section with a 1.8- ×1.8-m (6- ×6-ft) joint pattern, although very little cracking was exhibited. The Minnesota Road Research Facility UTW test sections on I-94 allow comparisons of the same UTW design on hot-mix asphalt (HMA) pavements with different structural capacities to be made. The strain and deflection measurements emphasize the importance of the support provided by the HMA layer. A reduction in this support occurs when the temperature of the HMA is increased or when the HMA begins to ravel. During evaluations of whether UTW is a viable rehabilitation alternative, cores should be pulled from the pavement to determine if the asphalt is stripping and if the asphalt layer has adequate thickness. UTW can be successfully placed on as little as 76 mm (3 in.) of asphalt, if the quality of the asphalt is good. The cores should also reveal whether the asphalt layer is of uniform thickness and whether stripping and raveling have occurred. If the asphalt layer is of uniform thickness and stripping and raveling have not occurred, UTW is a good option for use in the rehabilitation of asphalt pavements.

Initial Ride Quality of Hot-Mix Asphalt Pavements

2005 ◽  
Vol 1907 (1) ◽  
pp. 104-112
Author(s):  
M. Stroup-Gardiner ◽  
Alan Carter ◽  
Thomas Das ◽  
Brian Bowman
Keyword(s):  
Hot Mix Asphalt ◽  
Asphalt Pavements ◽  
Ride Quality ◽  
Acceptance Testing ◽  
International Roughness Index ◽  
Wide Range ◽  
Key Issues ◽  
Lane County ◽  
Local Anomalies

Ride quality assessed with an inertial profiler on flexible pavement was used to provide initial information on the following key issues: repeatability associated with international roughness index (IRI) values for a wide range of hot-mix asphalt (HMA) material variables, timing of acceptance testing for initial ride quality, IRI changes with type of roadway, influence of stops and starts in the paving operation on ride quality, identification of “bump,” and effect of grinding on IRI. IRI was calculated for 25-ft intervals instead of the standard 0.1 mi (528 ft) for all testing to highlight local anomalies such as bumps due to paving stoppages. Results indicate that the standard deviation of three replicate passes with an inertial profiler is 5 in./mi (includes 46 HMA mixes on the Auburn University National Center for Asphalt Technology test track). IRI measurements with time suggest that initial acceptance testing can be conducted within 7 days, which allows more flexibility in scheduling by the agency. Limited traffic also slightly reduces the IRI values, which is to the contractor's advantage. IRI values are suggested for two-lane county roads and medium- to high-traffic facilities. Separate IRI ranges are indicated for each of these categories on the basis of the type of HMA construction: new, repair and overlay, and mill and overlay. These ranges are set for best and good practices (continuous paving, no stoppages; consistent supply of trucks, very short stops). IRI values greater than 125 in./mi in any given 25-ft interval indicate a bump; bumps can be ground so that these areas have IRI values of less than 100 in./mi.

scholarly journals Nominal Aggregate Size an Index to The Resilient Modulus Value of Hot Mix Asphalt

2018 ◽  
Vol 7 (4.20) ◽  
pp. 59
Author(s):  
Sahar S. Neham
Keyword(s):  
Research Study ◽  
Hot Mix Asphalt ◽  
Filler Content ◽  
Resilient Modulus ◽  
Aggregate Size ◽  
Load Duration ◽  
Asphalt Cement ◽  
And Performance ◽  
Relative Quality

Properties and performance of hot mix asphalt are highly affected by aggregate as it is consists of 85 to 95 percent by weight and 75 to 85 percent by volume mineral aggregate. Resilient modulus was a very important parameter used either as input data in the procedure of pavement design or to evaluate the relative quality of materials. This research study the effect of nominal aggregate size on the resilient modulus value with different variations  such as tested temperature, percent of asphalt cement and filler content, load duration, and asphalt viscosity. Results under different variables showed that nominal aggregate size has a significant effect on the resilient modulus value as well as resilient modulus value decreases by (21.04% - 26.66%) when the nominal aggregate size increases from 19mm to 25mm while it decreases by (22.43 - 29.50%) when the nominal aggregate size increases from 25mm to 37.3mm. 

Sign in / Sign up

Export Citation Format

Share Document